Results 91 to 100 of about 83,691,994 (313)

Time‐Dependent Oxidation and Scale Evolution of a Wrought Co/Ni‐Based Superalloy

Advanced Engineering Materials, EarlyView.
This study shows how a new wrought Co/Ni‐based superalloy resists oxidation at 800 ∘$^\circ$C. The oxide scale changes from rough, fast‐growing spinel to a dense, protective chromia–alumina layer. Atom probe analysis reveals tiny refractory‐rich bubbles at the interface that mark the transition to long‐term, diffusion‐controlled protection ...
Cameron Crabb, Zachary T. Kloenne, Samuel R. Rogers, Chi Hang Dominik Kwok, Mark C. Hardy, Michele S. Conroy, David Dye   +6 more
wiley   +1 more source

Grouting and re-bearing behaviors of sandy mudstone in the residual stage

Journal of Rock Mechanics and Geotechnical Engineering
Grouting is an essential technique for reinforcing tunnel rock masses following deformation and failure. However, the mechanisms and effectiveness evaluation of grouting in fractured rock masses that have experienced substantial deformation and ...
Zipeng Xin, Zhaoyun Chai, Xuliang Zhang, Keqin Lian, Chang Xiao, Xiangyu Liu, Yuxu Shen, Wei Gong   +7 more
doaj   +1 more source

Copernicus Marine In Situ TAC - physical parameters list

This document is the list of the parameters implemented within Copernicus Marine In Situ - Thematic Assembly Centre. See http://www.marineinsitu.eu  for In Situ TAC related information.
Copernicus Marine In Situ Tac Data Management Team,
core   +1 more source

Preliminary results for the extraction and measurement of cosmogenic in situ C-14 from quartz [PDF]

, 2004
Radiocarbon is produced within minerals at the earth's surface (in situ production) by a number of spallation reactions. Its relatively short half-life of 5730 yr provides us with a unique cosmogenic nuclide tool for the measurement of rapid erosion ...
Anderson, R., Cook, G. T., Phillips, W. M., Naysmith, P., Cook, G.T., Lifton, N.A., Phillips, W.M., Lifton, N. A.   +7 more
core   +1 more source

Karl Popper and the Mechanisms of Hydrogen Embrittlement

Advanced Engineering Materials, EarlyView.
Representation of the beginning of loss of ductility rather than embrittlement. Small concentrations of hydrogen in a diffusible form within iron are well‐established to harm the mechanical integrity of steels. There are theories that attempt to explain the pernicious role of hydrogen.
H. K. D. H. Bhadeshia
wiley   +1 more source

Numerical study on in-situ mining oil shale by high-temperature steam injection in long-distance horizontal wells

Geomechanics and Geophysics for Geo-Energy and Geo-Resources
This article proposes an in-situ steam-assisted thermal decomposition method for oil shale using long-distance horizontal wells.Firstly, this article establishes a coupled thermal–hydraulic hydrothermal mechanical model considering the anisotropy of oil ...
Siqi Ren, Yichao Jia, Jing Zhao, Dong Yang, Guoying Wang   +4 more
doaj   +1 more source

Evolution of microcracks and energy of granite during shear test with PFC3D

Meitan kexue jishu
In order to investigate the influence of normal stress on the internal meso-scale damage process during rock shearing, direct shearing experiments and PFC3D numerical simulation experiments of granite under different normal stresses were carried out ...
Jizhe GUO, Zengchao FENG, Xuecheng LI
doaj   +1 more source

Architectures et nations. Le cas du Schleswig au regard d’autres régions frontalières en Europe [PDF]

, 2019
L’analyse de l’architecture dans cinq régions frontalières d’Europe semble suggérer que les rapports entre nation et nationalité d’un côté, et architecture de l’autre, présentent des ressemblances et des différences très intéressantes.
Dragsbo, Peter, Peter Dragsbo
core   +1 more source

Hydrogen‐Assisted Fracture of Iron‐Based Fe–Ni–Al Alloys

Advanced Engineering Materials, EarlyView.
Principal relations and fracture mechanisms of single‐phase and precipitate‐strengthened Fe–Ni–Al alloys subjected to prior electrochemical hydrogen charging are identified. The mechanisms of hydrogen effect on strength and microhardness are discussed, including hydrogen‐induced increase in microhardness and the role of hydrogen in fracture behavior ...
Nataliya Yadzhak, Olha Zvirko, Rostyslav Leshchak, Hryhoriy Nykyforchyn   +3 more
wiley   +1 more source

Prediction of Fractal Dimension in Shale CT and its Robustness to Interference Based on Convolutional Neural Networks

Taiyuan Ligong Daxue xuebao
[Purposes] The development of shale oil and gas often requires a thorough understanding of the internal pore-fracture distribution patterns within shale reservoirs to optimize development strategies and enhance production capacity.
SUN Dingwei, WANG Lei, YANG Dong, HUANG Xudong, JIA Yichao   +4 more
doaj   +1 more source